Patents by Inventor Tadahiro Sato

Tadahiro Sato has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20060079193
    Abstract: A radio receiver includes a branching unit, a first gain-control system, a second-gain control system, and a signal processing unit. The branching unit branches a radio signal received by the radio receiver into two signals. The first-gain control system performs a gain control of a pilot signal in one of branched signals, and the second gain control system performs a gain control of a data signal in another of the branched signals. The signal processing unit synchronizes frames in the received radio signal. The signal processing unit outputs a gain signal to each of the first gain-control system and the second gain-control system. The first gain-control system and the second gain-control system perform the gain controls based on the gain signal.
    Type: Application
    Filed: November 28, 2005
    Publication date: April 13, 2006
    Inventors: Tadahiro Sato, Akifumi Adachi
  • Patent number: 6963746
    Abstract: In a radio base station transceiver sub-system including a radio block, a plurality of base band processing blocks, and a channel allocation control block, the channel allocation control block calculates, for each base band signal processing block, the processing load, converted to a weight value, of all the channels allocated thereto or the ratio of said processing load and processing capability, converted to a weight value, of the base band signal processing block and allocates the traffic channel or the control channel to a base band signal processing block where the processing load or the ratio is small.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: November 8, 2005
    Assignee: Fujitsu Limited
    Inventors: Tadahiro Sato, Tomomitsu Yamanobe
  • Publication number: 20030159048
    Abstract: Object: To provide a time stamping system for electronic documents making it possible to easily provide a time stamp certifying date and time of a document prepared with general purpose document preparation software and also to easily and accurately verify the time data and a program medium for the same.
    Type: Application
    Filed: January 10, 2003
    Publication date: August 21, 2003
    Inventors: Tsutomu Matsumoto, Tadahiro Sato, Keisuke Ichikawa
  • Publication number: 20030069042
    Abstract: In a radio base station transceiver sub-system including a radio block, a plurality of base band processing blocks, and a channel allocation control block, the channel allocation control block calculates, for each base band signal processing block, the processing load, converted to a weight value, of all the channels allocated thereto or the ratio of said processing load and processing capability, converted to a weight value, of the base band signal processing block and allocates the traffic channel or the control channel to a base band signal processing block where the processing load or the ratio is small.
    Type: Application
    Filed: October 5, 2001
    Publication date: April 10, 2003
    Inventors: Tadahiro Sato, Tomomitsu Yamanobe